工具:
家用数字万用表
测量步骤如下:
1、选择一个数字万用表,如下图:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/35a85edf8db1cb131aa037f9d354564e93584b0a?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、为检测电池电压,把万用表的红色检测笔连接到VΩvA档,其中的V表示的就是电压检测;黑色笔接入COM档。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/2e2eb9389b504fc2ed7fbaefebdde71190ef6d33?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、选择一节电池,一般的五号干电池标称电压1.5V,充电电池标称电压1.2V。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/562c11dfa9ec8a13be2a5d0af903918fa0ecc02c?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、将万用表转到电压检测档位,可以直接转到2000mV,也就是最大检测2V。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/f7246b600c338744169925965f0fd9f9d62aa0f8?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5、接着万用表检测笔指针端接触电池,记住红笔接正极也就是突出的一端,黑笔接负极也就是平的一端。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/6c224f4a20a44623e794af889622720e0df3d7fa?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
6、可以看到电池电压是1531mv,也就是1.53V,用电量不多,电量还是很充足的。一般1V以下可能就无法带动电动玩具、闹钟、遥控器之类的了。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/08f790529822720efe6ee81075cb0a46f31fabbc?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)